Sometimes the bicyclic system of DABCO derivatives renders with two of the 2-carbon bridges superimposed, so that it looks like a piperazine instead. This occurs with both 2.3.2 and with the development head. Small changes in the structure far from the DABCO moiety will cause it to change the rendering of that system in an unpredictable way, so not all DABCO structures have the problem.
obabel -:'CCCCC1(CCCC)CS(=O)(=O)c2c(C(C1O)c1ccc(cc1)OCc1ccc(cc1)C[N+]13CCN(CC1)CC3)cc(cc2)N(C)C.[Cl-]' -opng > foo.png